METHOD FOR MAKING A CONTAINMENT ELEMENT AND APPARATUS FOR HEAT-SEALING A COVERING FILM TO AN ANNULAR BAND OF A CONTAINMENT ELEMENT
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Oct 17, 2017
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Oct 19, 2016
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Abstract
A method for making a containment element that has a bottom wall (3), a lateral wall (4) connected at the bottom to the bottom wall (3) and a shaped perimetric flange that extends outwards from an upper part of the lateral wall (4), wherein the method comprises a thermoforming operating step in which a flat sheet is thermoformed and the bottom wall (3), the lateral wall (4) and an annular band (2) that projects outwards from the upper part of the lateral wall (4) are created and, subsequently, a hot bending operating step for bending the annular band (2), dividing the annular band (2) into a first annular portion (6) and a second annular portion (7) which are concentric and are not coplanar, after the hot bending the annular band (2) constituting the shaped perimetric flange. An apparatus and a machine able to implement all or part of that method are also claimed.
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